2016-4-22 · Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation Xiaojuan Wang Department of Animal Plant and Soil Sciences Centre for AgriBioscience La Trobe University
Our results also showed that rhizosphere priming effects on SOM decomposition were positive at all developmental stages in C 3 plant`C 4 soil system but the direction of the rhizosphere priming effect changed at different developmental stages in the C 4 plant`C 3 soil system. Implications of rhizosphere priming effects on SOM
2021-4-1 · Rhizosphere priming is a process where inputs of labile C compounds contained in root exudates results in increased decomposition of soil organic matter (SOM). Recent discoveries demonstrate that
The temperature sensitivity of soil organic matter (SOM) decomposition has been a crucial topic in global change research yet remains highly uncertain. One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13C-labeling method we investigated the
2020-5-7 · The priming of soil C induced by glucose remained higher than that induced by alanine for up to 15 h. After this the priming of soil C induced by glucose declined and the priming of soil C induced by alanine remained relatively constant until the end of the 7-d study.
2016-9-1 · Rhizosphere priming effects i.e. changes in the rate of SOM decomposition were indicated by an increase or decrease of SOM-derived CO 2 production in planted compared to an unplanted soil. By continuously labeling plants with 13 C-depleted CO 2 we were able to differentiate root-derived CO 2 from SOM-derived CO 2 and calculate RPE as the difference in SOM-derived CO 2 between planted
Our results also showed that rhizosphere priming effects on SOM decomposition were positive at all developmental stages in C 3 plant`C 4 soil system but the direction of the rhizosphere priming effect changed at different developmental stages in the C 4 plant`C 3 soil system. Implications of rhizosphere priming effects on SOM
Rhizosphere interactions (activity in the root zone) has a high influence on the fluxes of carbon to and from the soil. One very important part of the rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as changes in the SOM decomposition rate
2003-9-1 · The rhizosphere priming effect was responsible for a major portion of the total soil C efflux. Cumulative soil C loss caused by rhizosphere effects during the whole growing season equated to the amount of root biomass C for the soybean treatment and 71 of root biomass C for the wheat treatment.
2002-8-2 · Living plants change the local environment in the rhizosphere and consequently affect the rate of soil organic matter (SOM) decomposition. The rate may increase for 3- to 5-folds or decrease by 10 to 30 by plant cultivation. Such short-term changes of rate (intensity) of SOM decomposition are due to the priming effect.
2019-10-14 · of these rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as the stimulation or suppression of soil organic matter (SOM)decomposition by live roots and associated rhizosphere organisms when compared to SOM decomposition from rootless soils under the same environmental conditions.
2021-7-13 · SPACEThe spatial aspect of rhizosphere priming. SOM Carbon cycling. Plant-microbe Interactions. Higher plants release a significant proportion of the carbon (C) they assimilate into the rhizospheremainly as sugars amino acids or organic acids. This labile carbon has been shown to substantially accelerate microbial decomposition of
Laboratory studies have shown that priming effects caused by inputs of carbon into the rhizosphere can change the rate of soil organic matter (SOM) decomposition and could have significant impacts on soil carbon cycling. However there have been few studies in field conditions because of experimental constraints but field data are needed to improve models that forecast the effects of climate
2021-4-1 · Rhizosphere priming is a process where inputs of labile C compounds contained in root exudates results in increased decomposition of soil organic matter (SOM). Recent discoveries demonstrate that
2017-7-2 · Under elevated productivity ECM trees enhanced decomposition more than AM trees via microbial priming of unprotected SOM. Collectively our results show that ecosystem responses to global change may hinge on the balance between rhizosphere priming and SOM protection and highlight the importance of dynamically linking plants and microbes in
2018-3-7 · The rhizosphere priming effect (RPE) is the acceleration or retardation of SOM decomposition by living roots and associated rhizosphere organisms (Kuzyakov 2002 Cheng Kuzyakov 2005) and is one of the most important components of rhizosphere interactions (Finzi et al. 2015).
2016-4-22 · The four species differed substantially in their rhizosphere priming effect (RPE). Except at Day 84 white lupin showed the greatest positive RPE of all species in contrast to the negative RPE produced by chickpea. This was further evidenced by an apparent loss and accumulation of soil organic carbon (SOC) in the rhizosphere of white lupin and
2019-10-14 · of these rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as the stimulation or suppression of soil organic matter (SOM)decomposition by live roots and associated rhizosphere organisms when compared to SOM decomposition from rootless soils under the same environmental conditions.
Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of competition for nutrients by plants and microorganisms thus maintaining nutrient balance among the various components of an ecosystem.
2010-10-8 · One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13 C-labeling method we investigated the temperature sensitivity of RPE and its impact on the temperature sensitivity of SOM decomposition.
2019-10-14 · of these rhizosphere interactions is the rhizosphere priming effect (RPE) which is defined as the stimulation or suppression of soil organic matter (SOM)decomposition by live roots and associated rhizosphere organisms when compared to SOM decomposition from rootless soils under the same environmental conditions.
2010-10-8 · One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13 C-labeling method we investigated the temperature sensitivity of RPE and its impact on the temperature sensitivity of SOM decomposition.
Priming effects are defined as "strong short-term changes in the turnover of soil organic matter caused by moderate treatments of the soil". Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of nutrients by plants and microorganisms as well as their
2021-2-21 · Background and aims It is known that nitrogen (N) input modulates the rhizosphere priming effect (RPE) however the magnitude and driving mechanisms of priming under increasing rates of fertilizer application remain unclear. Methods 15N-urea (control 75 (N75) 150 (N150) 225 (N225) and 300 (N300) kg N ha−1) was applied to a plant (maize)-soil (rice paddy) system and the RPE was
Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of competition for nutrients by plants and microorganisms thus maintaining nutrient balance among the various components of an ecosystem.
2020-5-7 · The priming of soil C induced by glucose remained higher than that induced by alanine for up to 15 h. After this the priming of soil C induced by glucose declined and the priming of soil C induced by alanine remained relatively constant until the end of the 7-d study.
2017-8-1 · Rhizosphere priming is crucial for regulating soil carbon and nitrogen biogeochemical cycles. An appreciable number of studies have been conducted to quantify the rhizosphere priming effect (RPE) and have shown that the RPE is sensitive to changes of plant and soil conditions.
Priming effects are defined as "strong short-term changes in the turnover of soil organic matter caused by moderate treatments of the soil". Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of nutrients by plants and microorganisms as well as their
The N 2-fixation ability of legumes enhanced rhizosphere priming by promoting photosynthesis and rhizodeposition. Our study demonstrates that the economic strategies of plant species regulate a plant-soil carbon-nitrogen feedback operating through the rhizosphere. These findings provide novel mechanistic insights into how plant species with
2021-7-13 · SPACEThe spatial aspect of rhizosphere priming. SOM Carbon cycling. Plant-microbe Interactions. Higher plants release a significant proportion of the carbon (C) they assimilate into the rhizospheremainly as sugars amino acids or organic acids. This labile carbon has been shown to substantially accelerate microbial decomposition of
2017-7-2 · Collectively our results show that ecosystem responses to global change may hinge on the balance between rhizosphere priming and SOM protection and highlight the importance of dynamically linking plants and microbes in terrestrial biosphere models.
2020-6-20 · The rhizosphere priming effect (RPE) is the change in native soil C mineralization rate relative to the unplanted control. ANPP above-ground net primary productivity BNPP below-ground net primary productivity. For details about species selection and C and N budget computation see Supporting Information Methods S1. Plant images by Alice Trotel.
Abstract. The root-driven soil aggregate turnover dynamics and rhizosphere priming effect (RPE changes in soil organic carbon (SOC) decomposition caused by living roots) are central to the understanding of SOC cycling. However the association between aggregate turnover and the RPE has not been illuminated in plant-soil systems because of
2010-10-8 · One of the contributing factors to this uncertainty is the lack of understanding about the role of rhizosphere priming effect (RPE) in shaping the temperature sensitivity. Using a novel continuous 13 C-labeling method we investigated the temperature sensitivity of RPE and its impact on the temperature sensitivity of SOM decomposition.
Rhizosphere priming is the change in decomposition of soil organic matter (SOM) caused by root activity. Rhizosphere priming plays a crucial role in soil carbon (C) dynamics and their response to global climate change. Rhizosphere priming may be affected by soil nutrient availability but rhizosphere priming itself can also affect nutrient supply to plants.
Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of competition for nutrients by plants and microorganisms thus maintaining nutrient balance among the various components of an ecosystem.
Priming effects are defined as "strong short-term changes in the turnover of soil organic matter caused by moderate treatments of the soil". Rhizosphere is the most important place where the priming effects take place. Rhizosphere priming effects reflect the turnover rate of soil carbon and nitrogen and affect the acquisition of nutrients by plants and microorganisms as well as their
2020-5-26 · The rhizosphere priming effect (RPE) is the change in decomposition of soil organic matter caused by root activity and it can be affected by plant species nutrient
2021-4-1 · Rhizosphere priming is a process where inputs of labile C compounds contained in root exudates results in increased decomposition of soil organic matter (SOM). Recent discoveries demonstrate that
2018-5-31 · The rhizosphere priming effect (RPE) plays an important role in the decomposition of soil organic matter (SOM) and the global carbon cycle. Although plant soil and environmental factors affecting the RPE have been examined it is still unclear how
2009-9-1 · Although the rhizosphere priming effect on SOM decomposition was highly significant for both planted treatments soil microbial biomass C was not significantly affected by this priming effect . The amounts of soil microbial biomass C were not significantly different between the unplanted control and the planted treatments or between different sampling dates.
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